From ad477373525719a9ee26655f4fd14ebd677de20e Mon Sep 17 00:00:00 2001
From: marcus <marcus@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Fri, 27 Jun 2008 13:17:04 +0000
Subject: Caching datalists. Refs #101

git-svn-id: https://code.elgg.org/elgg/trunk@1178 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/elgglib.php | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index 31693906d..3b8e444d7 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -1177,6 +1177,8 @@
 	/**
 	 * Data lists
 	 */
+		
+	$DATALIST_CACHE = array();
 		
 	/**
 	 * Get the value of a particular piece of data in the datalist
@@ -1186,13 +1188,17 @@
 	 */	
 		function datalist_get($name) {
 			
-			global $CONFIG;
+			global $CONFIG, $DATALIST_CACHE;
 			
 			// We need this, because sometimes datalists are received before the database is created
 			if (!is_db_installed()) return false;
 			
-			$name = sanitise_string($name);
-			if ($row = get_data_row("select value from {$CONFIG->dbprefix}datalists where name = '{$name}'")) {
+			$name = sanitise_string($name);
+			if (isset($DATALIST_CACHE[$name]))
+				return $DATALIST_CACHE[$name];
+			
+			if ($row = get_data_row("select value from {$CONFIG->dbprefix}datalists where name = '{$name}'")) {
+				$DATALIST_CACHE[$name] = $row->value;
 				return $row->value;
 			}
 			return false;
@@ -1208,11 +1214,16 @@
 	 */
 		function datalist_set($name, $value) {
 			
-			global $CONFIG;
+			global $CONFIG, $DATALIST_CACHE;
+			
 			$name = sanitise_string($name);
-			$value = sanitise_string($value);
+			$value = sanitise_string($value);
+			
 			delete_data("delete from {$CONFIG->dbprefix}datalists where name = '{$name}'");
-			insert_data("insert into {$CONFIG->dbprefix}datalists set name = '{$name}', value = '{$value}'");
+			insert_data("insert into {$CONFIG->dbprefix}datalists set name = '{$name}', value = '{$value}'");
+			
+			$DATALIST_CACHE[$name] = $value;
+			
 			return true;
 			
 		}
-- 
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